An Alaska Airlines plane taking off with a snow-capped mountain in the background.

Flights from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA)
Flights to Seattle
Washington
United States of America
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Popular airlines from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA)

Alaska Airlines
Delta
Southwest Airlines
United
American Airlines
Frontier Airlines

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Cheap Flights from Boise to Seattle (BOI-SEA)

Prices were available within the past 7 days and start at ￥21,280 for one-way flights and ￥80,530 for roundtrip, for the period specified. Prices and availability are subject to change.

All deals

One way

Roundtrip

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥80,530

Roundtrip

Found 2 days ago

Select Delta flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥80,530 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥81,420

Roundtrip

Found 2 days ago

Select Delta flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥81,420 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥94,720

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥94,720 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥95,610

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥95,610 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥96,270

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥96,270 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥97,160

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥97,160 Found 2 days ago

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥97,820

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥97,820 Found 2 days ago

Sun, Oct 4 - Fri, Oct 9

BOI

Boise

SEA

Seattle

￥129,800

Roundtrip

Just found

Select Southwest Airlines flight, departing Sun, Oct 4 from Boise to Seattle, returning Fri, Oct 9, priced at ￥129,800 Just found

Sun, Oct 4 - Fri, Oct 9

BOI

Boise

SEA

Seattle

￥137,990

Roundtrip

Just found

Select United flight, departing Sun, Oct 4 from Boise to Seattle, returning Fri, Oct 9, priced at ￥137,990 Just found

Thu, Oct 15 - Thu, Oct 15

BOI

Boise

SEA

Seattle

￥144,620

Roundtrip

Found 2 days ago

Select American Airlines flight, departing Thu, Oct 15 from Boise to Seattle, returning Thu, Oct 15, priced at ￥144,620 Found 2 days ago

Find the cheapest month to fly from Boise (BOI) to Seattle (SEA)

October is typically the cheapest month to fly

From ￥18,381 - ￥33,333 per traveler.

Travel information

Origin airport	Boise Airport
Destination airport	Seattle-Tacoma International Airport
Distance	640 km away
Airlines serving	Alaska Airlines, Delta, Southwest Airlines, United, American Airlines, Frontier Airlines
Popular airline	Alaska Airlines
Roundtrip price	￥80,530
Average flight time	1 hour 43 mins

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￥21,280 Cheap Flights from Boise (BOI) to Seattle (SEA)

Popular airlines from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA)

Be in the know

Book smarter

Earn twice

Cheap Flights from Boise to Seattle (BOI-SEA)

Find the cheapest month to fly from Boise (BOI) to Seattle (SEA)

October is typically the cheapest month to flyOctober is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

October is typically the cheapest month to fly